The distance-to-go display feature allows the user to approach the next nominal position quickly and reliably, simply by traversing to a display value of zero.
它的剩余移动量显示功能使用户只要对显示值清零就可快速可靠趋近下一个标称工位。
According to the fatigue type, use safe-life design method to study tower crane's fatigue, and choose nominal stress approach to estimate the life of tower crane.
并根据其疲劳类型，确定选用安全寿命设计方法对塔式起重机钢结构进行疲劳分析，并应用名义应力法估算塔式起重机钢结构的疲劳寿命。
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